Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/6231#issuecomment-103626362
Busy with other work so I haven't looked in detail, but a couple of
drive-by comments:
- I don't think this is a PySpark-specific issue; I think that the same
issue affects the Scala / Java APIs, so their docs should be updated as well.
- Why not just say "using a given associative and commutative function" up
on line 815? The current text makes it sound like this is a bug, whereas I'm
not even sure that we could / would want to efficiently support non-commutative
functions in the future.
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